Combination measuring instrument.



No. 653,640. Patented-July I0, I900. G. H. BUTRIGK. COMBINATIONMEASURING INSTRUMENT.

(Application filed Apr. 18, 1900.) (N O QL) 2 Sheets-Sheet I.

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THE Norms Pzrzns F' .2. art/ 12M No. 653,640. Patented July I0, I900.

G. I'I.. B'UTRICK. COMBINATION MEASURING INSTRUMENT.

7 (Application filed Apr. 18, 1900.) (No Model.) 2 Shaets8heet 2.

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UNITED STATE PATENT OFFICE.

GEORGE I-I. BUTRICK, OF WORCESTER, MASSACHUSETTS, ASSIGNOR-OF ONE-HALFTO JAMES E. CONNOR, OF SAME PLACE.

COMBINATION M EASU RING INSTRUMENT.

SPECIFICATION forming part of Letters Patent No. 653,640, dated July 10,1900.

Application filed April 13, 1900- To all whom it may concern:

Be it known that I, GEORGE H. BUTRIOK, of Worcester, county ofWorcester, and State'of Massachusetts, have invented anew and usefulImprovement in Combination Measuring Instruments, of whichthefollowingis a specification.

This invention has reference to a combination measuring and draftinginstrument; and it consists of two members connected by improved meansin such manner that they may be variously adjusted, reversed, andinterchanged to produce different instruments for different measurementsand uses.

The invention consists also in the details of construction andcombination of parts hereinafter described and claimed.

In the accompanying drawings, Figure 1 is a side elevation of myimproved instrument with the parts adjusted to form gaging-calipers.Fig. 2 is a transverse section on the line a cot Fig. 1. Fig. 3 is asimilar section on the line b b of Fig. 1. Fig. 4 is an elevation of thedevice with the parts adjusted to form a square. Fig. 5 is an elevationof the device with the parts adjusted to form a depth-gage. Fig. 6 is asimilar View with the parts adjusted to form a beam-compass.

Referring to the drawings, my device comprises two bars 1 and 2, ofgeneral rectangular form in cross-section, having on their endsrightangular legs 3 and 4:, each provided with removable pins 5 and 6.In their various adjustments these members are adapted to be held inoperative relation face to face, with the legs extending either in thesame or opposite directions, by means of two yokes 7 and 8, each havingan opening through which the two bars extend and in which they fitsnugly, as shown in Figs. 2 and 3. The yoke 7 has tapped through itsupper end a binding-screw 9, with its end abutting against aclamping-block 10, resting,when the parts are in the position shown in1, on the outer face of the bar 1, this arrangement afiording means bywhich the two bars may be held together within the yoke in fixedrelations. In its lower end the yoke is provided with a vertical hole,in which is seated a clamping-bolt 11, having on its end within theopening in the yoke a finger 12-, which engages in a 1on Serial No.12,725. (No model.)

gitudinal groove 13 in the side of the bar 2. The outer exposed end ofthe bolt is threaded and receives a nut 14:, by which it may be drawnoutwardly and by the engagement of thefinger in the groove clamp the bar2 firmly to the yoke. A spring 15 encircles the bolt between the yokeand nut and prevents undue looseness of the parts when the nut is turnedto release the bar. The other yoke 8 has formed in its upper end avertical hole '16, in which is seated aclamping-bolt 17, progether infixed relations, so that in order to adjust the bars longitudinally onewith respect to the other it is but necessary to loosen thebinding-screw 9, after which the yokes may be adjusted to or from eachother and will carry with them the respective bars. While this manner ofadjusting the parts will answer for certain kinds of measurements, afiner adjustment is demanded in other cases, and to accomplish this Iconnect two yokes by an adjusting mechanism consisting of ahorizontally-threaded bolt 21?, fixed to yoke 7 beneath the lower barand extending through cars 22, depending from yoke 8, a nut 23 beingapplied to the bolt between the ears. By this means the yokes carryingtheir respective bars may be adjusted to a nicety, it being butnecessary to first loosen the binding-screw 9, as before described.After the adjustment is made the screw is again tightened to hold theparts in fixed relations.

In order that the bars may be reversed side for side within the yokes,as shown in Fig. 4, or end for end, as in Fig. 5, and at the same timebe subject to the action of the clamping screws 11 and 17, I provideeach bar opposite to the longitudinal grooves described with ad ditionallongitudinal grooves, a groove 24 in bar 1 and a groove 25 in bar 2,arranged directly opposite the other grooves, so that when these barsare reversed the grooves will occupy the same position with relation tothe fingers of the clamping-screws as did the other grooves.

In Fig. 1 the bars are adjusted with the angular legs extending in thesame direction side by side to form gaging-calipers for either inside oroutside measurements.

In Fig. 4 the upper bar has been reversed side for side, with its legextending in a direction opposite the leg on the other bar to form asquare for squaring to shoulder.

In Fig. 5 the lower bar has been reversed end for end to form adepth-gage formeasuring the depth of holes and cavities, while in Fig. 6the bars are adjusted end to end, with both legs extending in the samedirection to form beam-compasses.

In the various positions the two bars are adapted to be clamped,respectively, to the yokes and are at all times adjustably connected bythe adjusting-bolt 21 so that under all conditions their longitudinaladjustments are effected by the same means and in the same manner.

The sides of the bars may be provided with graduations 26 for thevarious measurements.

Having thus described my invention, what I claim is 1. The combinationwith the two bars arranged face to face, of two yokes embracing thesame, a device carried by each yoke and each engaging one of the bars,and means independent of said devices for binding the bars together faceto face in fixed relations.

2. In combination with the two bars disposed face to face, a yokeembracing said bars, a clamping device sustained by the yoke and adaptedto bind the bars together in fixed relations, a second clamping devicealso sustained by the yoke and engaging one of the bars, a second yokeembracing said bars, and a clamping device sustained by this yoke andengaging the opposite bar.

3. The combination with the two bars arranged face to face, of two yokesembracing the same, a clamping device mounted on each yoke and adaptedeach to engage one of the bars, means independent of said clampingdevices for binding the bars together face to face in fixed relations,and an adjusting connection between the yokes.

4. In a measuring instrument the combination'with the twobars eachhaving longitudinal grooves in its opposite sides, of two yokesembracing said bars, a sliding bolt mounted in one yoke and provided onits end with a finger adapted to engage in the grooves in one of thebars, and a sliding bolt mounted in the other yoke and adapted to engagein the grooves in the other bar, whereby the said bars are reversible inthe yokes side for side and end for end.

5. In combination with the two bars disposed face to face each providedin its sides with longitudinal grooves, two yokes embracing said bars, aclamping device on one of the yokes adapted to bind the bars firmly infixed relations, and clamping-bolts sustained by the yokes'and adaptedeach to engage in the grooves of one of the bars.

In testimony whereof I hereunto set my hand, this 4th day of April,1900, in the presence of two attesting witnesses.

GEORGE II. BUTRIOK.

Witnesses:

J OHN II. MEAGHER, JOHN E. SULLIVAN.

